Thaddeus hyatt



(No Model.)

Tl HYATT.

` ILLUMINATINGiT/'AULT OUVER' 0R GRATING. No. 257,114.'

MayQT 1882. .2.V

Patented NA PETERS, Phommhngmphar, wnsmngmn, D.C.

UNITED STATES PATRMTAQEEICE.

THADDEUs HYATT, F NEW YORK, N. Y., AssIeNOaToELmADETH ADELAIDE LAKE HYATT, 0E sAME PLAGE.

lLLUMlNATlNG VAULT-COVER OR GRATING.

SPECIFICATION forming` part of Letters Patent No. 257,714, dated May 9, 1882.

` r Application filed April 1l, 1832. (No model.)

To all whom it may concern Be it known that I, THADDEUs HYATT, a citizen of the United States, and a resident of the city, county, and State of New York, have invented certain new and useful Improvements in Illuminating Vault-Covers or Gratings and Building Constructions made therefrom, of which the following is a specication.

In the accompanying drawings, making part of this specification, like letters refer to like parts in all the tgures.

Figure 1 represents a concrete light7 or grating made of artiiicial stone and set with glasses. A A show the stone or concrete grating; BB, the glasses; (t a., gutters or watercourses formed in the concrete b b, tie metals, or the metallic tensional strength ot' the concrete grating.

Fig. 2 4represents the concrete light faced with a soft-metal plate. C C show the softmetal plate.

Fig. 3 represents the soft-metal plate O C before being attached to the concrete grating.

. a a show gutters or water-courses cast or formed in the surface of the plate; c o, attachment pieces or rings castor formed upon the under face of the plate.

Fig. 4 represents an enlarged cross-section of Fig. 2 on the line w x.

Fig. 5 represents a cast-iron grating covered with concrete, faced with soft metal, and set with glasses. D I) show the cast-iron grating, A A, the concrete; C C, the soit-metal surt'aceplate.

Fig. 6 is au enlarged cross-section of Fig. 5 on the line y y. B B show the shoulder and neck of the glasses where they enter the lightopeniu gs of the grating and are cemented fast.

Fig. 7 is a full-size view ot' a portion of the lead plate.

The object of my invention, with respect to the illuminating gratings called concrete lights, is to make them ornamental by means of a Vchanneled surface, which at the sume time aids to free the face of the glasses from dust and dirt.

The object of my invention broadly, as to illuminating-gratings faced with soft metal, is to lessen the cost ot' making such lights, the purpose of the gutters made in the face of the soft-metal plate being the same as with respect to gutters made in the face of the concrete grating.

Fig. 2 represents the cheapest mode of construction, and is the manufacture I prefer.

In making a concrete light such as Fig. 1` represents I cast the concrete in a mold so formed as to leave the face of the concrete guttered, as shown, when the concrete is removed from the mold 5 and I prefer to cast the concrete grating in a mold formed with cores to produce the openings or light-holes to be setwith glasses after the concrete grating has become set and hard. The tie metals I place in the mold with the plastic concrete.

In making a concrete light faced with soft metal, as shown by Fig. 2, I place the metal plate face downward in the mold, and then put in the plastic concrete upon it, adding either tie metals or a cast iron grating.

The soft-metal facing-plate represented by Fig. 3 I prefer to make of lead, and I make the holdfasts o c preferably in the form ot'rings, as shown.

The mede of fastening a soft.- metal foot-sur face to illuminating-gratiugs by means otl holdl'asts upon the under face ot' the soft-metal plates in combination with concrete I lind to be cheaper and more convenient than my former method ot' attachment by means either of screws or sweating,7 and to be equally efficacious.

\Vhat I claim as my invention, and! desire to secure by Letters Patent, is-

l.. A ,concrete light or illuminating stone grating formed with a channeled foot-surface, substantially as and for the purposes herein set forth and illustrated.

' 2. A concrete light or illuminating stone THADDEUS HYATT.

Witnesses:

T. C. BRECHT, LLOYD F. KELEHER.

ICO 

